<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<table border="1" cellspacing="0" width="500px">
    <tr align="center">
        <td >班级</td>
        <td content="4">姓名和年龄</td>
        <td >电话</td>
    </tr>
    <tr align="center">
        <td rowspan="2">601班</td>
        <td ><table  width="100%" cellpadding="0" >
            <tr align="center" >
                <td >jack</td>
                <td>24</td>
            </tr>
        </table></td>
        <td >1351234567</td>
    </tr>

    <tr align="center"><td ><table  width="100%" cellpadding="0" >
        <tr align="center" >
            <td >tom</td>
            <td>22</td>
        </tr>
    </table></td>
        <td >1351234567</td></tr>

    <tr align="center">
        <td rowspan="3">602班</td>
        <td ><table  width="100%" cellpadding="0" >
            <tr align="center" >
                <td >rose</td>
                <td>22</td>
            </tr>
        </table></td>
        <td >1351234567</td>

    <tr align="center">
    <td  ><table  width="100%" cellpadding="0" >
        <tr  align="center">
            <td >张三</td>
            <td>25</td>
        </tr>
    </table></td>
    <td >1351234567</td>

    <tr align="center">
        <td  ><table  width="100%" cellpadding="0" >
            <tr  align="center" >
                <td >李四</td>
                <td>25</td>
            </tr>
        </table></td>
        <td >1351234567</td>
</tr>

</table>
</body>
</html>